CN219611762U

CN219611762U - Frequency source system and electronic system

Info

Publication number: CN219611762U
Application number: CN202320389388.3U
Authority: CN
Inventors: 杜东桥
Original assignee: Guangzhou Zhonglei Electric Technology Co ltd
Current assignee: Guangzhou Zhonglei Electric Technology Co ltd
Priority date: 2023-03-03
Filing date: 2023-03-03
Publication date: 2023-08-29
Anticipated expiration: 2033-03-03

Abstract

The utility model provides a frequency source system and an electronic system, wherein the frequency source system comprises a printed circuit board, a power conversion module, a phase-locked loop module and a built-in controller which are electrically connected with an external power supply are arranged on the printed circuit board, the power conversion module comprises a first power interface and a second power interface, the output end of the first power interface is electrically connected with the phase-locked loop module, the output end of the second power interface is electrically connected with the built-in controller, and the phase-locked loop module is in communication connection with the built-in controller. By implementing the utility model, the integration of the frequency source system is realized, the volume is reduced, the development period is shortened, the working efficiency is improved, and the cost is reduced.

Description

Frequency source system and electronic system

Technical Field

The present utility model relates to the field of electronic systems, and in particular, to a frequency source system and an electronic system.

Background

In recent years, with the continuous development of communication and radar technology, radar and various communication devices are increasingly appearing in our daily lives, particularly in the civilian field. The frequency source is an essential key component of radar and various communication equipment, at present, the existing frequency source adopts a peripheral circuit for phase-locked loop chip matching phase, then carries out board arrangement and layout together with other functional units, finally carries out integral debugging, has large volume, and needs full-page rework once design goes wrong or a certain unit module goes wrong, and has high cost, long development period and low working efficiency.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art, and provides a frequency source system and an electronic system, which realize the integration of the frequency source system, reduce the volume, reduce the development period, improve the working efficiency and reduce the cost.

The technical scheme of the utility model provides a frequency source system, which comprises a printed circuit board, wherein a power conversion module, a phase-locked loop module, a built-in controller and a frequency source signal output interface which are electrically connected with an external power supply are arranged on the printed circuit board, the power conversion module comprises a first power interface and a second power interface, the output end of the first power interface is electrically connected with the phase-locked loop module, the output end of the second power interface is electrically connected with the built-in controller, the input end of the phase-locked loop module is in communication connection with the built-in controller, and the output end of the phase-locked loop module is connected with the frequency source signal output interface.

Furthermore, the printed circuit board is also provided with a serial peripheral interface which is in communication connection with the external controller, and the serial peripheral interface is in communication connection with the built-in controller.

Furthermore, the serial peripheral interface is arranged on the printed circuit board in a stamp hole mode.

Further, the phase-locked loop module comprises a built-in reference clock source, a phase discriminator, a loop filter, a voltage-controlled oscillator and a phase-locked loop power interface, wherein the first power interface comprises a first sub-power interface and a second sub-power interface electrically connected with the phase-locked loop power interface, the output end of the first sub-power interface is electrically connected with the power end of the built-in reference clock source, the output end of the built-in reference clock source is connected with the input end of the phase discriminator, the output end of the phase discriminator is connected with the input end of the loop filter, the output end of the loop filter is connected with the input end of the voltage-controlled oscillator, and the output end of the voltage-controlled oscillator is connected with the frequency source signal output interface.

Further, the power conversion module further comprises a first variable resistor electrically connected with the first sub power interface and a second variable resistor electrically connected with the second sub power interface.

Further, the power conversion module further comprises a third variable resistor electrically connected with the second power interface.

Furthermore, an external reference clock source interface connected with an external reference clock source is further arranged on the printed circuit board, and the output end of the external reference clock source interface is connected with the input end of the phase discriminator.

Further, the frequency of the voltage controlled oscillator is 50MHz.

Further, the power conversion module is a low dropout linear voltage regulator.

The technical scheme of the utility model also provides an electronic system which comprises the frequency source system.

After the technical scheme is adopted, the method has the following beneficial effects: through setting up power conversion module, phase-locked loop module, built-in controller and frequency source signal output interface on the PCB board, realize the frequency source system integration, reduce the volume, reduce development cycle, improve work efficiency, reduce cost.

Drawings

The present disclosure will become more readily understood with reference to the accompanying drawings. It should be understood that: the drawings are for illustrative purposes only and are not intended to limit the scope of the present utility model. In the figure:

fig. 1 is a schematic structural diagram of a frequency source system according to an embodiment of the present utility model.

Detailed Description

Specific embodiments of the present utility model will be further described below with reference to the accompanying drawings.

It is to be readily understood that, according to the technical solutions of the present utility model, those skilled in the art may replace various structural modes and implementation modes with each other without changing the true spirit of the present utility model. Accordingly, the following detailed description and drawings are merely illustrative of the utility model and are not intended to be exhaustive or to limit the utility model to the precise form disclosed.

Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms.

As shown in fig. 1, fig. 1 is a schematic structural diagram of a frequency source system according to an embodiment of the present utility model, which includes a printed circuit board 10, a power conversion module 11 electrically connected to an external power source, a phase-locked loop module 12, a built-in controller 13, and a frequency source signal output interface 14 are disposed on the printed circuit board 10, the power conversion module 11 includes a first power interface 111 and a second power interface 112, an output end of the first power interface 111 is electrically connected to the phase-locked loop module 12, an output end of the second power interface 112 is electrically connected to the built-in controller 13, an input end of the phase-locked loop module 12 is communicatively connected to the built-in controller 13, and an output end of the phase-locked loop module 12 is connected to the frequency source signal output interface 14.

The frequency source system provided in this embodiment mainly includes a printed circuit board (Printed Circui tBoard, PCB) 10, and the PCB 10 is provided with a power conversion module 11, a phase-locked loop module 12 and a built-in controller 13, and the PCB 10 can use a common printed circuit board, thereby reducing the cost.

The power conversion module 11 is configured to convert an external power source into a corresponding voltage, the power conversion module 11 includes a first power interface 111 and a second power interface 112, the first power interface 111 is electrically connected with the phase-locked loop module 12, the first power interface 111 is configured to supply the power converted by the power conversion module 11 to the phase-locked loop module 12, the second power interface 112 is electrically connected with the built-in controller 13, and the second power interface 112 is configured to supply the power converted by the power conversion module 11 to the built-in controller 13.

The phase-locked loop module 12 is communicatively connected to the built-in controller 13, and the phase-locked loop module 12 is configured to generate a frequency source consistent with a target frequency sent by the built-in controller 13, and output the frequency source through the frequency source signal output interface 14.

The built-in controller 13 is used for controlling the output frequency of the phase-locked loop module 12, the built-in controller 13 is integrated on the PCB 10, the target frequency can be preset in the built-in controller 13, the target frequency can be set according to the requirements of users, such as 40MHz, 50MHz, 70MHz and the like, the frequency source system can be used when being powered on through the built-in controller 13, the built-in controller 13 does not depend on an external controller, debugging is not needed, and the working efficiency and the user experience are improved.

According to the frequency source system provided by the embodiment, the power conversion module, the phase-locked loop module, the built-in controller and the frequency source signal output interface are arranged on the PCB, so that the integration of the frequency source system is realized, the volume is reduced, the development period is shortened, the working efficiency is improved, and the cost is reduced.

In one embodiment, the PCB board 10 is further provided with a serial peripheral interface (Serial Peripheral Interface, SPI) 15 communicatively connected to the external controller, and the SPI 15 is communicatively connected to the internal controller 13.

The SPI interface 15 is used for connecting the built-in controller 13 with an external controller, so that the target frequency of the built-in controller 13 can be adjusted by the external controller, thereby dynamically adjusting the output frequency of the phase-locked loop module 12, and improving compatibility.

In one embodiment, SPI interface 15 is provided on PCB board 10 in a stamp-hole manner for reduced volume and improved connection stability.

In one embodiment, the pll module 12 includes a built-in reference clock source 121, a phase detector 122, a loop filter 123, a voltage-controlled oscillator 124, and a pll power interface 125, where the first power interface 111 includes a first sub-power interface 1111, and a second sub-power interface 1112 electrically connected to the pll power interface 125, an output end of the first sub-power interface 1111 is electrically connected to the voltage-controlled oscillator 124 of the power end of the built-in reference clock source 121, an output end of the built-in reference clock source 121 is connected to an input end of the phase detector 122, an output end of the phase detector 122 is connected to an input end of the loop filter 123, an output end of the loop filter 123 is connected to an input end of the voltage-controlled oscillator 124, and an output end of the voltage-controlled oscillator 124 is connected to the frequency source signal output interface 14.

The built-in reference clock source 121, the phase discriminator 122, the loop filter 123 and the voltage-controlled oscillator 124 are integrated in the phase-locked loop module 12, the voltage-controlled oscillator 124 is used for generating a frequency source consistent with a target frequency according to the reference clock source, the built-in reference clock source 121 is used for generating a reference clock source signal, a part of signals output by the voltage-controlled oscillator 124 are output, the other part of the signals are input to the phase discriminator 122, the phase discriminator 122 performs phase comparison through the reference clock source generated by the built-in reference clock source 121, when the phase difference changes, the output voltage of the phase discriminator 122 changes, the built-in controller 13 adjusts the voltage-controlled oscillator 124 according to the output voltage, so that the frequency output by the voltage-controlled oscillator 124 remains unchanged, the purpose of phase locking is achieved, the frequency source system can be used after power-up, the working efficiency and the integration level are further improved, and the volume is reduced.

In one embodiment, the power conversion module 11 further includes a first variable resistor 113 electrically connected to the first sub power interface 1111, and a second variable resistor 114 electrically connected to the second sub power interface 1112.

The first variable resistor 113 is used for adjusting the output voltage of the first sub-power interface, so that the output voltage of the first sub-power interface meets the voltage requirement of the built-in reference clock source 121. The second variable resistor 114 is used for adjusting the output voltage of the second sub-power interface, so that the output voltage of the second sub-power interface meets the voltage requirement of the phase-locked loop module 12, and the compatibility is further improved.

In one embodiment, the power conversion module 11 further includes a third variable resistor 115 electrically connected to the second power interface 112.

The third variable resistor 115 is used for adjusting the output voltage of the second power interface 112, so that the output voltage of the second power interface 112 meets the voltage requirement of the built-in controller 13, and the compatibility is further improved.

In one embodiment, the CPB board 10 is further provided with an external reference clock source interface 16 connected to an external reference clock source, and an output end of the external reference clock source interface 16 is connected to an input end of the phase detector 122.

The external reference clock source interface 16 is configured to generate a reference clock source signal according to the external reference clock source, and when the built-in reference clock source 121 cannot meet the user requirement, the external reference clock source is accessed through the external reference clock source interface 16, so as to detect whether the pll module 12 reaches the target frequency source, and further improve the compatibility.

In one embodiment, the voltage controlled oscillator 124 has a frequency of 50MHz for improved accuracy.

In one embodiment, the power conversion module 11 is a low dropout linear regulator.

The power conversion module 11 is a multi-channel low dropout linear regulator with high rejection ratio, thereby further improving the stability and safety of the output voltage.

What has been described above is merely illustrative of the principles and preferred embodiments of the present utility model. It should be noted that several other variants are possible to those skilled in the art on the basis of the principle of the utility model and should also be considered as the scope of protection of the present utility model.

Claims

1. The frequency source system is characterized by comprising a printed circuit board, wherein a power conversion module, a phase-locked loop module, a built-in controller and a frequency source signal output interface which are electrically connected with an external power supply are arranged on the printed circuit board, the power conversion module comprises a first power interface and a second power interface, the output end of the first power interface is electrically connected with the phase-locked loop module, the output end of the second power interface is electrically connected with the built-in controller, the input end of the phase-locked loop module is in communication connection with the built-in controller, and the output end of the phase-locked loop module is in communication connection with the frequency source signal output interface.

2. The frequency source system of claim 1, wherein the printed circuit board is further provided with a serial peripheral interface in communication with an external controller, the serial peripheral interface being in communication with the internal controller.

3. The frequency source system of claim 2, wherein the serial peripheral interface is provided on the printed circuit board in a postage stamp aperture.

4. The frequency source system of claim 1, wherein the phase-locked loop module comprises a built-in reference clock source, a phase detector, a loop filter, a voltage-controlled oscillator, and a phase-locked loop power interface, the first power interface comprising a first sub-power interface and a second sub-power interface electrically connected to the phase-locked loop power interface, an output of the first sub-power interface being electrically connected to a power supply of the built-in reference clock source, an output of the built-in reference clock source being connected to an input of the phase detector, an output of the phase detector being connected to an input of the loop filter, an output of the loop filter being connected to an input of the voltage-controlled oscillator, an output of the voltage-controlled oscillator being connected to the frequency source signal output interface.

5. The frequency source system of claim 4, wherein the power conversion module further comprises a first variable resistor electrically connected to the first sub-power interface, a second variable resistor electrically connected to the second sub-power interface.

6. The frequency source system of claim 5, wherein the power conversion module further comprises a third variable resistor electrically connected to the second power interface.

7. The frequency source system of claim 4, wherein an external reference clock source interface connected to an external reference clock source is further provided on the printed circuit board, and an output end of the external reference clock source interface is connected to an input end of the phase detector.

8. The frequency source system of claim 4, wherein the voltage controlled oscillator has a frequency of 50MHz.

9. The frequency source system of any of claims 1-8, wherein the power conversion module is a low dropout linear regulator.

10. An electronic system comprising a frequency source system according to any of claims 1-9.